Sprecher
Beschreibung
Laser-driven plasma accelerators (LPA) are compact sources of ultra-short, intense proton pulses in the multi-10-MeV energy range. These unique parameters predestine LPAs as powerful tools for ultra-high dose rate radiobiology research. To promote further sophisticated radiobiological studies at LPAs, automated setups for proton acceleration and beamline operation are required.
Key ingredient here are diagnostic tools for a realtime characterization of laser-driven proton pulses at the LPA source as well as in different application scenarios.
In our contribution, we present the solutions for source-to-sample characterization implemented at the ALBUS-2S beamline at the Draco Petawatt laser system at Helmholtz-Zentrum Dresden – Rossendorf. With the OCTOPOD and miniSCIDOM, two devices for online, single pulse characterization of volumetric dose distributions are presented, applicable for the primary LPA source and mm-scale dose distributions at the sample site, respectively. Both devices are based on volumetric scintillators as active detector material and rely on tomographic reconstruction for signal retrieval. The contribution will outline the detector principle and focus on the optimization of the detector signal evaluation program to achieve near-realtime performance despite the required complex deconvolution steps.
